Question

我想在 Cloud9 中为我的rails应用设置postgresql。

当我尝试bundle exec rake db:create时出现以下错误。

could not connect to server: Connection refused
        Is the server running on host "localhost" (::1) and accepting
        TCP/IP connections on port 5432?
could not connect to server: Connection refused
        Is the server running on host "localhost" (127.0.0.1) and accepting
        TCP/IP connections on port 5432?
...

的database.yml

default: &default
  adapter: postgresql
  encoding: unicode
  pool: 5
  username: <%= ENV['USERNAME'] %>
  password: <%= ENV['PASSWORD'] %>
  host:     localhost

development:
  <<: *default
  database: app_development

test:
  <<: *default
  database: app_test

production:
  <<: *default
  database: app_production

的Gemfile

gem 'pg', '~> 0.18.2'

/etc/postgresql/9.3/main/的的pg_hba.conf

# Database administrative login by Unix domain socket
local   localhost            ubuntu                                md5

# TYPE  DATABASE        USER            ADDRESS                 METHOD

# "local" is for Unix domain socket connections only
local   all             ubuntu                                    md5
# IPv4 local connections:
host    all             all             127.0.0.1/32            md5
# IPv6 local connections:
host    all             all             ::1/128                 md5

虽然我在stackoverflow中发现了类似的问题，但它们并不适合我。如果您能告诉我如何避免此错误，将不胜感激。

Answer 1

配置postgresql.conf文件。您必须将listen_addresses更新为all，并确保通过删除#mark来取消注释该行。因此，listen_addresses应该如下listen_addresses = '*'

Cloud9中的postgresql错误＆＃34;无法连接到服务器：连接被拒绝＆＃34;

1 个答案: